400 / | HD | TYPEWRITING MACHINES |
118.2 | DF | TYPING BY OTHER THAN TYPE-FACE OR TYPE-DIE {3} |
124.01 | DF | .~ Character formation by impact (e.g., wire matrix) {4} |
124.02 | ![]() | .~.~ With signal conditioning {4} |
124.03 | DF | .~.~.~> Overheat protection |
124.04 | DF | .~.~.~> Responsive to impact member position |
124.05 | DF | .~.~.~> Control of drive force {1} |
124.07 | DF | .~.~.~> With wear or defect compensation |